Re-org of partitioned tables

Question

Is there a way to re-org a range partitioned table?
I have a table which is range partitioned and till date of 2007 November.So the rest of the records are all in max partition.The size of the max is so huge (250 millions) it takes long time to split the max partition.And during the process of split the indexes on the table are getting invalid.So i am looking at a better way of doing the split.So is re-org possible on the max partition? During the process of re-org can i have the interim table with the new partitions?

Answer 1

Hello,
Can you post the link to the section you read this?
h3. I just tested following scenarios in my test setup and it worked just fine. You should try this test as well.
-- MASTER TABLE
CREATE TABLE TEST_PART_AA
  KEY       VARCHAR2(23 BYTE)                       NULL,
  KEY_DATE  DATE                                    NULL
PARTITION BY RANGE (KEY_DATE)
  PARTITION TEST_PART_A_200902 VALUES LESS THAN (TO_DATE(' 2009-03-01 00:00:00', 'SYYYY-MM-DD HH24:MI:SS', 'NLS_CALENDAR=GREGORIAN'))
    LOGGING
    NOCOMPRESS, 
  PARTITION TEST_PART_MAX VALUES LESS THAN (MAXVALUE)
    LOGGING
    NOCOMPRESS
NOCOMPRESS
NOCACHE
NOPARALLEL
MONITORING;
CREATE UNIQUE INDEX TMP$$_TEST_PART_A_PK0 ON TEST_PART_AA
(KEY)
LOGGING
NOPARALLEL;
ALTER TABLE TEST_PART_AA ADD (
  CONSTRAINT TMP$$_TEST_PART_A_PK0
PRIMARY KEY
(KEY));
-- INTERIM TABLE
CREATE TABLE TEST_PART_A
  KEY       VARCHAR2(23 BYTE)                       NULL,
  KEY_DATE  DATE                                    NULL
PARTITION BY RANGE (KEY_DATE)
  PARTITION TEST_PART_A_200902 VALUES LESS THAN (TO_DATE(' 2009-03-01 00:00:00', 'SYYYY-MM-DD HH24:MI:SS', 'NLS_CALENDAR=GREGORIAN'))
    LOGGING
    NOCOMPRESS, 
     PARTITION TEST_PART_A_200903 VALUES LESS THAN (TO_DATE(' 2009-04-01 00:00:00', 'SYYYY-MM-DD HH24:MI:SS', 'NLS_CALENDAR=GREGORIAN'))
    LOGGING
    NOCOMPRESS, 
     PARTITION TEST_PART_A_200904 VALUES LESS THAN (TO_DATE(' 2009-05-01 00:00:00', 'SYYYY-MM-DD HH24:MI:SS', 'NLS_CALENDAR=GREGORIAN'))
    LOGGING
    NOCOMPRESS, 
  PARTITION TEST_PART_MAX VALUES LESS THAN (MAXVALUE)
    LOGGING
    NOCOMPRESS
NOCOMPRESS
NOCACHE
NOPARALLEL
MONITORING;
Insert into TEST_PART_AA
   (KEY, KEY_DATE)
Values
   ('3', TO_DATE('02/08/2009 00:00:00', 'MM/DD/YYYY HH24:MI:SS'));
Insert into TEST_PART_AA
   (KEY, KEY_DATE)
Values
   ('1', TO_DATE('04/08/2009 16:22:49', 'MM/DD/YYYY HH24:MI:SS'));
Insert into TEST_PART_AA
   (KEY, KEY_DATE)
Values
   ('2', TO_DATE('03/08/2009 00:00:00', 'MM/DD/YYYY HH24:MI:SS'));
COMMIT;# redefintion pl/sql block
DECLARE
   num_errors   NUMBER;
BEGIN
   DBMS_REDEFINITION.can_redef_table ('USIUSER',
                                      'TEST_PART_AA',
                                      DBMS_REDEFINITION.cons_use_pk,
                                      NULL
   DBMS_REDEFINITION.start_redef_table ('USIUSER',
                                        'TEST_PART_AA',
                                        'TEST_PART_AC',
                                        NULL,
                                        DBMS_REDEFINITION.cons_use_pk,
                                        NULL,
                                        NULL
   DBMS_REDEFINITION.copy_table_dependents ('USIUSER',
                                            'TEST_PART_AA',
                                            'TEST_PART_AC',
                                            DBMS_REDEFINITION.cons_orig_params,
                                            TRUE,
                                            TRUE,
                                            TRUE,
                                            FALSE,
                                            num_errors,
                                            FALSE
   DBMS_OUTPUT.put_line('ERRORS OCCURED WHEN COPYING DEPENEDENTS OBJECTS '
                        || num_errors);
   DBMS_REDEFINITION.finish_redef_table ('USIUSER',
                                         'TEST_PART_AA',
                                         'TEST_PART_AC',
                                         NULL
END;Regards
Edited by: OrionNet on Apr 8, 2009 4:29 PM